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Title Transcription
アカマツ クロマツ サイシュエン ニ カンスル キソテキ ケンキュウ ダイ5ホウ アカマツ クローン ノ セイチョウ オヨビ チャッカ ニ オヨボス セヒ ノ エイキョウ
Title Alternative (English)
Fundamental Studies on Seed Gardens of Japanese Pine(5) : Effects of Some Fertilizers on the Growth and Cone Crop of Akamatsu (Pinus densiflora)
File
language
jpn
Author
Miyake, Noboru
Okibe, Akira
Description
The preliminary study was made on the seed garden to examine the effect of three major fertilizing elements to the cone production of Pinus densiflora. The test seed garden was established on the sandy flood plain in the cultivated area of the north-eastern part of Shimane Pref. Five clones of P. densiflora ( each clone 75 trees) were planted at intervals of 3.4m x 2.4m in March of 1962. The planting area was divided in NPK-, NP-, NK-, PK-, and control-plot (each with 3 replicas), and was fertilized every year since 1962. The growth of height and diameter were measured every year till 1965, the number of branches in 1965. The flowers and cones were examinde in spring and autumn of every year till 1966. The leaf analyses were made on N, P, and K in autumn of 1965. the results were as follows :
1. The N fertilizer was very effective for the tree growth and the cone production.
2. The percentage of N, P and K ( dry matter ) in needle leaaves which were collected from the well-growthed plots ( NPK, NP and NK ) showed smaller value than those of PK-and control-plot.
3. The cone production of a tree was related to the number of its branches.
4. Each clone showed its own characteristics in regard to the relation between tree growth and cone production, and common tendency was not seen among them.
Conclusively, it seems that N fertilizer is essentially needed in the early stage of seed garden establishment of P. densiflora on sandy soil, and is very effective for promoting treegrowth and cone production.
Journal Title
島根農科大学研究報告
Volume
15
Start Page
(A-2)101-112
ISSN
05598311
Published Date
1967-01-31
NCID
AN00108241
Publisher
島根農科大学
Publisher Aalternative
The Shimane Agricultural College
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
Remark
A,Bを含む
開学十五周年記念号(Commemoration Issue for the 15th Aniversary)
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